I would think that what you really want is:
local numbervar x;
for x := 1 to ubound({?parameter}) step 1 do(
{?parameter}[x] := "10" + {?parameter};
)
I am using x, only because bracket i bracket makes italics. In additio
n, SATELE01, wanted how to alter the parameter, though making a string would be a helpful check.
hopefully, I got all the syntax correct